Khan Academy: Triangles: Medians Divide Into Smaller Triangles of Equal Area

Need an activity for teaching the Pythagorean Theorem? Geometry juniors apply the Pythagorean theorem to two triangles to determine a final calculation. 

This video discusses the terminology used in geometry, including words such as centroid and median. Through this lecture, young mathematicians can see a visual representation of both. The video also demonstrates how to calculate medians.

In the first part of this series, the instructor addressed the terminology used with medians and centroids of triangles and then showed how to solve this type of problem. He illustrated the concepts using a high-level problem, likely...

This video discusses the terminology used in geometry, including words like centroid and median. Through this lecture, young mathematicians can see a visual representation of both median and centroid. Also, a proof showing how to...

Balance the knowledge of intersecting medians. Using examples, the portion of a geometry playlist introduces the centroid. A video describes the property of the location of the triangle medians' point of concurrency. 

This video tutorial [7:46] demonstrates that the three medians of a triangle divide it into six smaller triangles with equal areas.

This video demonstrates how to find various measures of triangles formed by the medians of a right triangle.

This video tutorial [9:00]explains how to find various measures of triangles formed by the medians of a right triangle. Based on the properties of the medians of a triangle, properties of centroids, and the Pythagorean theorem.

Video demonstrates polynomial long division using four different example problems. This video also appears in the Algebra: ck12.org strand. [12:09]

While the lesson focuses on right triangles, this activity offers a great way to practice the area of all triangles through an interactive webpage. The activity begins with the class taking a square paper and cutting in in half; can they...